Citation: Zhi Yong Wei, Lian Liu, Jun Gao, Pei Wang, Min Qi. The copolymerization of L-lactide and ε-caprolactone using magnesium octoate as a catalyst[J]. Chinese Chemical Letters, ;2008, 19(3): 363-366. doi: 10.1016/j.cclet.2008.01.004 shu

The copolymerization of L-lactide and ε-caprolactone using magnesium octoate as a catalyst

Zhi Yong Wei ^a,b, ,
Lian Liu ^a ,
Jun Gao ^a ,
Pei Wang ^a ,
Min Qi ^b

a College of Electromechanics and Materials Engineering, Dalian Maritime University, Dalian 116026, PR China;
b School of Materials Science and Engineering, Dalian University of Technology, Dalian 116024, PR China

Received Date: 18 September 2007

Fund Project: The authors thank for financial support by the National Natural Science Foundation of China (No. 30470521).

Copolymerizations of L-lactide (L-LA) and e-caprolactone (ε-CL) were conducted in bulk using magnesium octoate as a catalyst. The reactivity ratios of L-LA and ε-CL were determined to be r_L=23 and r_C=0.22, respectively. The sequence analyses of the copolymers were performed on ¹³C NMR. An increase in the reaction temperature enhances the role of transesterification and the extent of randomness.
- Copolymerization,
- L-Lactide,
- ε-Caprolactone,
- Reactivity ratio,
- Magnesium octoate
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